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ApplicationManager Class

Manages ASP.NET application domains for an ASP.NET hosting application.

Namespace:  System.Web.Hosting
Assembly:  System.Web (in System.Web.dll)

[AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
public sealed class ApplicationManager : MarshalByRefObject

The ApplicationManager object provides lifetime management of objects in the hosting environment for an ASP.NET application. It is responsible for:

  • Activating and initializing ASP.NET applications.

  • Managing the application lifetime and the lifetime of objects registered in the application.

  • Exposing objects used by the hosting environment to process ASP.NET application requests.

  • Providing a list of applications running in the hosting process at any given moment.


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0